Share-Based Compensation (Tables)

12 Months Ended

Mar. 31, 2012

Disclosure of Compensation Related Costs, Share-based Payments [Abstract]

Schedule of Assumptions Used

The following weighted-average assumptions were used for options granted during fiscal 2012, fiscal 2011, and fiscal 2010:

	Fiscal 2012		Fiscal 2011		Fiscal 2010
Risk-free interest rate	2.41	%	2.68	%	1.89	%
Expected life of options	5.7 years		5.7 years		5.5 years
Expected dividend yield of stock	1.78	%	1.59	%	1.49	%
Expected volatility of stock	29.78	%	30.13	%	27.96	%

Schedule of Share-based Compensation Arrangement by Share-based Payment Award, Options, Vested and Expected to Vest, Outstanding

A summary of share option activity is as follows:

	Number of Options		Weighted Average Exercise Price		Average Remaining Contractual Term	Aggregate Intrinsic Value
Outstanding at March 31, 2011	3,274,395		$	25.95
Granted	325,051		35.62
Exercised	(262,380	)	22.73
Forfeited	(11,084	)	27.25
Canceled	(13,380	)	23.24
Outstanding at March 31, 2012	3,312,602		$	27.16	5.21	$	16,273
Exercisable at March 31, 2012	2,462,599		$	26.05	4.27	$	13,848

Schedule of Share-based Compensation, Restricted Stock and Restricted Stock Units Activity

A summary of the non-vested restricted share activity is presented below:

	Number of Restricted Shares		Weighted-Average Grant Date Fair Value
Non-vested at March 31, 2011	400,951		$	29.70
Granted	235,670		35.62
Vested	(91,084	)	30.52
Canceled	(12,510	)	33.20
Non-vested at March 31, 2012	533,027		$	32.10